MED64 multi-electrode array (MEA) system, designed for extracellular nerve electrophysiology research, is from Alpha Med Science in Japan. It can make fast electrophysiologic detections on in-vitro materials, such as brain slices, myocardial sections, neurons, myocardial cells and stem cells.MED64 multi-electrode array (MEA) system is also the only one that makes persisted recording in humidity incubator. Compresstome automatic microtome designed by Precisionary Instruments from U.S is used to get slices from very soft tissues and organs. Compresstome can cut slices with smooth surfaces, uniform thickness and good cell viability.